EZCT-2000A Current Transformer Test Set
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EZCT-2000A

Current Transformer Test Set
Part Number(s)
9027-UC [110V]
9044-UC [220V]
Download Links
EZCT-2000A Datasheet (English)
Customer References
EZCT-2000A User's Manual (English)
Testing Application Notes (PowerPoint Presentation)

The EZCT-2000A is Vanguard’s third-generation microprocessor-based current transformer test set. The EZCT-2000A can perform the current transformer (CT) excitation test, measure the CT winding resistance and CT current-ratio automatically. All of the EZCT-2000A’s test leads can be connected to the CT output terminals (X1, X2, X3, X4 and X5), eliminating the need for lead switching during testing. Test voltage output is automatically raised and lowered by the EZCT-2000A without any operator intervention. With up to 2000 Vac excitation test voltage available, the EZCT-2000A can easily perform excitation tests on very large CT’s.
  • Perform Saturation, Ratio and Polarity Tests
  • Perform CT Winding Resistance Test
  • Fully Automated
  • Test record header information including company, substation name, circuit ID, manufacturer, CT serial number, operator name, and test record-comments
  • Plot Multiple Saturation Curves
  • Store 140 Records (of 10 Saturation Curves)
  • Computer Interface
  • USB Flash drive interface

EZCT-2000A

Cables

EZCT-2000A

Technical Specifications
TYPE Portable current-transformer test set
PHYSICAL SPECIFICATIONS 16.8”W x 12.6”H x 14”D (42.7 cm x 32.0 cm x 35.6 cm); Weight: 60 lbs (27.2 Kg)
INPUT POWER 100 – 120 Vac or 200 – 240 Vac (factory pre-set), 50/60 Hz
MEASUREMENT METHOD
OUTPUT TEST VOLTAGES 0 – 50 Vac @ 10A max,
0 – 300 Vac @ 10A max,
0 – 500 Vac @ 5A max,
0 – 1200 Vac @ 2A max,
0 – 2000 Vac @ 1.2 A max
VOLTAGE READING RANGE 0 – 2,200 Vac; Accuracy: ±1.0% of reading, ±1 volt
CURRENT READING RANGE 0 – 10A; Accuracy: ±1.0% of reading, ±0.02A
CURRENT-RATIO RANGE 0.8 – 999: 0.1%, 1000 – 1999: 0.3%, 2000 – 5000: 1%
PHASE ANGLE MEASUREMENT 0 – 360 degrees; Accuracy: ±1.0 degree
RESISTANCE READING RANGE 100 micro-ohms – 10 ohms; Accuracy: 2% of reading, ±1 count, ±10 μ-ohms
DISPLAY Back-lit LCD Screen (240 x 128 dot graphic; 114mm x 64mm); viewable in bright sunlight and low-light levels
PRINTER Built-in 4.5-inch wide thermal printer
COMPUTER INTERFACES One RS-232C port (115k baud), One USB port
EXTERNAL DATA STORAGE One USB Flash drive interface port
(Flash drive not included)
PC SOFTWARE Windows XP/Vista-based CT Analysis software is included with purchase price
INTERNAL TEST RECORD STORAGE Stores 140 test records. Each test record may contain up to 10 sets of excitation, resistance and ratio data
INTERNAL TEST PLAN STORAGE Stores 128 test plans. Each test plan can store 10 excitation test voltage and current settings
SAFETY
ENVIRONMENT Operating: -10 to 50 C (15F to +122 F);
Storage: -30 C to 70 C (-22F to +158 F)
CABLES Five 20-foot X cable sets, One 35-foot H cable set, power cord, One cable-carrying duffel bag
WARRANTY One year on parts and labor
Specifications are valid at nominal voltage and ambient temperature of +25C (+77F).
Last updated on February 10, 2010

Related Knowledgebase Items
Problem Description Probable Cause Suggested Solution

When running the excitation test, the Vx voltage is always zero. The excitation current can be raised during a test.
  • The EZCT-2000A X cables are driving a short circuit.

  • Check CT shorting screws

  • Check X lead connections.

When running the excitation test, the Vx voltage can be raised but the excitation current is always zero during a test.
  • The EZCT-2000A X cable is driving an opened circuit.
  • Check the CT terminal connection.

Field Pictures
EZCT-2000 Testing in Noi Bai, Vietnam